To answer this question you must understand the Bible. The King James Version of the Bible was completed in 1611 and became the standard Bible for Christianity for about 300 years. In the late 1800's theological scholars began a process of changing the Bible and since then many Bible versions have been created. Not only did these scholars change the Bible, but they made over 100,000 changes to Biblical verses from the King James Version. One of these changes deals with the levels of heaven.

In the King James Version it reads: "There are also celestial bodies, and bodies terrestrial: but the glory of the celestial is one, and the glory of the celestial is one, and the glory of the terrestrial is another. There is one glory of the sun, and another glory of the moon, and another glory of the stars: for one star differeth from another star in glory." (Bible KJV 1 Cor. 15:40-41.)

In the NLT (New Living Translation) the same verses read: "There are bodies in the heavens and bodies on the earth. The glory of the heavenly body bodies is different from the glory of the earthly bodies. The sun has one kind of glory, while the moon and stars each have another kind. And even the stars differ from each other in their glory." (Bible NLT 1 Cor. 15:40-41)

In the Jewish world of Jesus's time the Jews believed in many heavenly levels of glory. From Clarke's Commentary there are seven degrees of splendour and glory. (Adam Clarke's Commentary (1810)) It reads:

"Verse 42. So also is the resurrection of the dead.

That is, the bodies of the dead, though all immortal, shall possess different degrees of splendour and glory, according to the state of holiness in which their respective souls were found. The rabbins have some crude notions concerning different degrees of glory, which the righteous shall possess in the kingdom of heaven. They make out sevendegrees:-

"The first of which is possessed by tsaddi kim, the just, who observe the covenant of the holy, blessed God, and subjugate all evil affections."

"The second is possessed by those who are yesharim, the upright; whose delight it is to walk in the ways of God and please him."

"The third is for temimim, the perfect: those who, with integrity, walk in the ways of God, and do not curiously pry into his dispensations."

"The fourth is for kedoshim, the holy ones; those who are the excellent of the earth, in whom is all God's delight." Psalms 16:3.

"The fifth is for baaley teshubah, the chief of the penitents; who have broken through the brazen doors, and returned to the Lord."

"The sixth is for tinukoth shel beith raban, the scholars and tender ones; who have not transgressed."

"The seventh is for chasidim, the godly: and this is the innermost of all the departments." These seven degrees require a comment by themselves."

Now the answer to your question.

They will end up in one of the many heavens of glory.